Automatic duplicating apparatus



(N Model.) A 12 Sheets-Sheet 1.

G. H. DAVIS. AUTOMATIG DUPLIGATING APPARATUS. No. 584,?56.

Patented June QE, 1897.

Witnesses:

(No Model). '1 G. H. DAVIS.

AUTOMATIC. DUPLIUATI NG APPARATUS.

110,584,756. Patented June 15, 1897.

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ATENT GEORGE IIOIVLETT DAVIS, OF NE\V YORIQ'N. Y., ASSIGNOR TO THE A. B.DICK COMPANY, OF CHICAGO, ILLINOIS.

AUTOMATIC DUPLICATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 584,756, dated June 15,1897.

Application filed September 9,1895. Renewed March 27, 1897. Serial No.629,574. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE IIOW'LETI DA- VIs, a citizen of the UnitedStates, residing at New York, in the county of New York and State of NewYork, have invented a certain new, useful, and valuable Improvement inAutomatic Duplicating Apparatus, of which the following is a full,clear, and exact description.

My present invention relates to automatic duplicating apparatus, and hasfor its object to provide the combination and arrangement of partssubstantially as herein shown and de scribed.

In the accompanying drawings, Figure 1 is a part sectional and sideelevation of my improved apparatus. Fig. 2 is a part sectional and endelevation of my apparatus with the side of containing-box removed. Fig.3 is a transverse sectional view of the inking device, and Fig. 4 is aview of the under side of the ink-plate.

Similar numerals of reference indicate corresponding parts throughoutthe several views.

The accompanying drawings represent a containing-box 1, preferablymounted upon legs to resemble a table, and within this box andpreferably to the side thereof are pivoted the lower ends of theswinging arms 2 2 3 3, the upper ends of the former being connected bythe cross-bar or handle 4, and on the upper ends of the latter, 3 3, arepivotally secured the depending arms 5 5, supporting the revolvingcomposition roller 6 at their lower ends. Between the arms 2 2 and 3 3are the connecting-arms 7 7, having the guideways 8 8 provided on theirinner sides. The gravity-levers 9 9, pivoted at the points 10 10,normally bear down at their rear ends 11 11 upon the stop-guides 12 12and keepin g their opposite or front ends 13 13 raised, so that wheneverthe arms 5 5 are advanced by drawing the handle 4 forward the lugs 14 14upon said arms 5 5 pass over the gravitylevers 9 9 until they reachtheir forward ends 13 13, when the weight upon the latter causes thelugs 14 14 travel under the gravity-levers 9 9 instead of over them, asbefore, when instead of the roller 6 riding over the platen 16, as itdoes in its forward movement, it drops thereon as soon as the lugs arefree of the points 13 13, and continues in contact with said platenuntil the lugs reach the guides 12 12, which lift the roller onto therevolving ink-plate 17.

The duplicating apparatus or frame 18, of which the platen 16 forms apart, may be of any suitable construction, but preferably like theapparatus known as the Edison mimeograph, in which the upper part of theframe 19 is hinged at the point 20 and carries the Wax stencil-sheet 21,between which and the upper surface of the platen 16 is placed the blankpaper to be printed, and when the inkroller 6 passes over the saidstencil and platen in its return movement only, the ink from said rollerpasses through the perforations made in said stencil 21 onto the blankpaper underneath, but, as before stated, the duplicating apparatusitself, 18, forms no part of my present invention. It consists,essentially, of the roller-holding frame, shown as described, and thegravity-lever and guiding mechanism 9 to 15.

My invention also contemplates means for supplying the revolvingink-plate 17 with ink, said ink-plate being revolved byany wellknownform of pawl 22 and ratchet 23, as shown in Fig. 4, my ink-supplyingmeehanism consisting of a tube or passage 24, extending up through thecenter of the inkplate 17, said tube connecting with two or more branchtubes 25 26, which latter are provided at their extreme ends with anysuitable form of ink-reservoir, such as the collapsible tubes 27 28,which reservoirs may contain inks of different colors, and as the ink isre quired it is only necessary to collapse the tubes, which will forcethe fluid ink through the tubes 25 26 out upon the ink-plate.

In order that the ink-plate may be revolved, so as to equally distributethe ink thereon, I have provided an arm 80, which is secured to or madea part of the loosely-journaled plate 31, Figs. 3 and 4, which carriesthe pawl 22. The arm 30 is connected in any suitable manner to one ofthe swinging arms 2 of the swinging frame, so that by the ordinary inovement of said frame the arm will be moved to and fro, which willaccordingly cause the pawl 22 to act upon the ratchet 23, therebyimparting a partial revolution to the inkplate each time the frame ismoved forward.

I-Iaving shown my invention, what I claim as new, and desire to secureby Letters Patent, is- I 1. In a printing apparatus the combination witha swinging roller-frame having lugs on its roller-arms ofa guideway andgravity-1ever upon and under which the said lugs ride and serve to raisethe printing-roller above the printing-platen on its forward movementand drop upon the printing-platen on its backward movement substantiallyas shown and described.

2. In a printing apparatus, the combination with a swinging roller-framehaving lugs on its roller-arms, of a guideway along which said lugs ridewhen the roller-frame is traveling in one direction, and a rocking leverpivoted above said guideway and over which the lugs ride when theroller-frame is traveling in the reverse direction, substantially asdescribed.

3. In aprintin g apparatus, the combination with the upright pivotedarms, of the rods conncctin g said arms, a swinging roller-frame carriedby said pivoted arms, lugs on said roller-frame, guideways on theconnecting arms with which said lugs engage when the roller-frame istraveling in one direction, rocking levers pivoted to theconnecting-arms above the guideways and over which the lugs ride whenthe roller-frame is traveling in the reverse direction, and an ink-plateover which the roller-frame travels, substantially as described.

4. In a printing apparatus, the combination with the upright pivotedarms, of the rods connecting said arms, a swinging roller-frame carriedby said pivoted arms, lugs on said roller-frame, guideways on theconnectingarms with which said lugs engage when the roller-frame istraveling in one direction,rocking levers pivoted to the connecting-armsabove said guideways and over which the lugs ride to raise theroller-frame when traveling in the reverse direction, stop-guidessecured to the connecting-arms near the ends of the rockin glevers, andan inking-plate over which the roller-frame travels, substantially asdescribed.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE HOWLETT DAVIS.

Vitnesses:

JOHN MAocoLeAN, JOSEPH F. STEFFENs.

